If you’re searching for a sweet treat that’s as delicious as it is nutritious, look no further than these Marco Friendly Buckeye Bars. These bars are a delightful twist on traditional buckeyes, combining the rich, nutty flavor of peanut butter with the indulgence of chocolate, all while keeping health in mind. The use of powdered peanut butter, collagen peptides, and sugar-free powdered sugar makes these bars a guilt-free indulgence that everyone will love. Whether you’re looking for a post-workout snack or a sweet treat to satisfy your cravings, these bars are sure to hit the spot.
Why This Recipe Works

The beauty of Marco Friendly Buckeye Bars lies in their simplicity and balance. By using PB Fit powdered peanut butter, you get the rich taste of peanut butter with significantly less fat and calories. Collagen peptides not only enhance the protein content but also contribute to skin and joint health. The sugar-free powdered sugar keeps things sweet without the added calories, making these bars perfect for anyone watching their sugar intake. Plus, they’re no-bake, meaning you can whip them up in no time, and they’ll satisfy your sweet tooth without sending you into a sugar crash.
Ingredient Breakdown

- 1 1/2 cups PB Fit powdered peanut butter: A low-fat, high-protein alternative to regular peanut butter that gives all the flavor without the extra calories.
- 2 scoops collagen peptides: I used Vital Proteins brand, a fantastic source of protein that supports skin, hair, nails, and joints.
- 1/2 cup peanut butter: I used Jif All Naturals for its creamy texture and rich flavor, adding depth to the bars.
- 1 cup sugar-free powdered sugar: I used Swerve, which provides the sweetness without the sugar spike.
- 1/2 teaspoon vanilla extract: Adds warmth and enhances the overall flavor of the bars.
- 1/2 cup nonfat milk: I used Fairlife brand for its high protein content and creamy consistency.
- 6 tablespoons semi-sweet chocolate chips: Approximately 90 grams, for a rich, chocolatey topping that brings everything together.
Cook’s Kit

- Mixing Bowl: A large bowl for combining all the ingredients smoothly.
- Spatula: To mix and fold the ingredients efficiently.
- 9×9 inch baking dish: To shape and set the bars.
- Measuring Cups and Spoons: For accurate ingredient measurement.
- Microwave-safe bowl: For melting the chocolate chips.
Method: Marco Friendly Buckeye Bars
Step 1: Prepare the Baking Dish
Begin by lining a 9×9 inch baking dish with parchment paper, leaving some overhang for easy removal later. This will ensure your bars come out effortlessly.
Step 2: Mix the Dry Ingredients
In a large mixing bowl, combine the PB Fit powdered peanut butter, collagen peptides, and sugar-free powdered sugar. Use a spatula to mix until well combined.
Step 3: Add the Wet Ingredients
Add the peanut butter, vanilla extract, and nonfat milk to the dry mixture. Stir everything together until you achieve a thick, creamy batter. If the mixture is too dry, add a splash more of nonfat milk until you reach your desired consistency.
Step 4: Press into the Baking Dish
Transfer the mixture into the prepared baking dish. Use the spatula to evenly spread and press down the mixture, ensuring a compact layer.
Step 5: Melt the Chocolate
In a microwave-safe bowl, add the semi-sweet chocolate chips. Microwave in 15-30 second intervals, stirring in between until the chocolate is fully melted and smooth.
Step 6: Top the Bars with Chocolate
Pour the melted chocolate over the pressed peanut butter mixture in the baking dish. Use the spatula to spread it evenly across the top.
Step 7: Chill and Set
Place the baking dish in the refrigerator for at least 1 hour or until the chocolate is set and the bars are firm.
Step 8: Slice and Serve
Once set, use the parchment overhang to lift the bars out of the baking dish. Slice into squares and enjoy your Marco Friendly Buckeye Bars!
Easy Ingredient Swaps
- If you’re out of PB Fit, you can use regular powdered peanut butter, but the calorie count will vary.
- Collagen peptides can be replaced with your favorite protein powder if desired.
- For a vegan option, substitute the nonfat milk with almond milk or any plant-based milk of your choice.
- Use dark chocolate chips instead of semi-sweet for a richer chocolate flavor.
Problems & Prevention
- Too Crumbly: If your mixture is too crumbly, add a little more nonfat milk, one tablespoon at a time, until it comes together.
- Chocolate Not Melting: Be careful not to overheat the chocolate in the microwave. Stir often to ensure it melts evenly without burning.
- Bars Not Setting: Ensure you fully chill the bars for at least one hour. If they are still soft, leave them in the fridge longer.
- Too Sweet: If you prefer a less sweet bar, reduce the amount of sugar-free powdered sugar to your taste.
Refrigerate, Freeze, Reheat
Store any leftovers in an airtight container in the refrigerator for up to one week. For longer storage, you can freeze the bars. Wrap them individually in plastic wrap and place them in a freezer-safe bag. They will keep well for up to three months. When you’re ready to enjoy them, simply thaw them in the refrigerator overnight or at room temperature for a few hours.
Quick Q&A
Can I use regular peanut butter instead of powdered peanut butter?
You can, but keep in mind that it will add extra calories and fat to the bars. Using powdered peanut butter keeps them lighter and healthier.
How can I make these bars more chocolatey?
You can increase the amount of chocolate chips used in the topping or even mix some into the peanut butter layer for added flavor.
Are these bars suitable for meal prep?
Absolutely! These bars are perfect for meal prep. Make a batch at the beginning of the week, and enjoy them as a quick snack throughout the week.
Can I add nuts or seeds to the bars?
Yes! Feel free to add chopped nuts or seeds to the mixture for added crunch and nutrition. Almonds, walnuts, or chia seeds would be great additions.
Wrap-Up
Marco Friendly Buckeye Bars are a perfect balance of indulgence and health, making them a great treat for any occasion. With simple ingredients and an easy method, you can whip up these delicious bars in no time. Whether you’re enjoying them by yourself or sharing them with friends, these bars are sure to be a hit. So go ahead, indulge in a sweet treat that’s friendly to your health goals with these irresistibly tasty Marco Friendly Buckeye Bars!

Marco Friendly Buckeye Bars
Ingredients
- 1 1/2 cups PB Fit powdered peanut butter a low-fat, high-protein alternative
- 2 scoops collagen peptides I used Vital Proteins brand
- 1/2 cup peanut butter I used Jif All Naturals for creaminess
- 1 cup sugar-free powdered sugar I used Swerve
- 1/2 teaspoon vanilla extract adds warmth to the flavor
- 1/2 cup nonfat milk I used Fairlife brand for high protein
- 6 tablespoons semi-sweet chocolate chips approximately 90 grams for topping
Instructions
- Begin by lining a 9x9 inch baking dish with parchment paper, leaving some overhang for easy removal.
- In a large mixing bowl, combine the PB Fit powdered peanut butter, collagen peptides, and sugar-free powdered sugar. Use a spatula to mix until well combined.
- Add the peanut butter, vanilla extract, and nonfat milk to the dry mixture. Stir until you achieve a thick, creamy batter.
- Transfer the mixture into the prepared baking dish. Use the spatula to evenly spread and press down the mixture.
- In a microwave-safe bowl, add the semi-sweet chocolate chips. Microwave in intervals until melted and smooth.
- Pour the melted chocolate over the pressed peanut butter mixture. Spread it evenly across the top.
- Place the baking dish in the refrigerator for at least 1 hour or until the chocolate is set and the bars are firm.
- Once set, lift the bars out using the parchment overhang. Slice into squares and enjoy!
Equipment
- Mixing Bowl
- Spatula
- 9x9-inch Baking Dish
- Measuring cups and spoons
- Microwave-safe bowl
Notes
- Store leftovers in an airtight container in the refrigerator for up to one week.
- For longer storage, wrap bars individually and freeze them for up to three months.
- For a vegan option, substitute nonfat milk with almond or plant-based milk.
